source3/libads/ldap_schema.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    ads (active directory) utility library
   4    Copyright (C) Guenther Deschner 2005-2007
   5    Copyright (C) Gerald (Jerry) Carter 2006
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "ads.h"
  23 #include "libads/ldap_schema.h"
  24 #include "libads/ldap_schema_oids.h"
  25 #include "../libcli/ldap/ldap_ndr.h"
  26
  27 #ifdef HAVE_LDAP
  28
  29 static ADS_STATUS ads_get_attrnames_by_oids(ADS_STRUCT *ads,
  30                                             TALLOC_CTX *mem_ctx,
  31                                             const char *schema_path,
  32                                             const char **OIDs,
  33                                             size_t num_OIDs,
  34                                             char ***OIDs_out, char ***names,
  35                                             size_t *count)
  36 {
  37         ADS_STATUS status;
  38         LDAPMessage *res = NULL;
  39         LDAPMessage *msg;
  40         char *expr = NULL;
  41         const char *attrs[] = { "lDAPDisplayName", "attributeId", NULL };
  42         int i = 0, p = 0;
  43
  44         if (!ads || !mem_ctx || !names || !count || !OIDs || !OIDs_out) {
  45                 return ADS_ERROR(LDAP_PARAM_ERROR);
  46         }
  47
  48         if (num_OIDs == 0 || OIDs[0] == NULL) {
  49                 return ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  50         }
  51
  52         expr = talloc_asprintf(mem_ctx, "(|");
  53
  54         for (i=0; i<num_OIDs; i++) {
  55                 talloc_asprintf_addbuf(&expr, "(attributeId=%s)", OIDs[i]);
  56         }
  57
  58         talloc_asprintf_addbuf(&expr, ")");
  59         if (expr == NULL) {
  60                 return ADS_ERROR(LDAP_NO_MEMORY);
  61         }
  62
  63         status = ads_do_search_retry(ads, schema_path,
  64                                      LDAP_SCOPE_SUBTREE, expr, attrs, &res);
  65         if (!ADS_ERR_OK(status)) {
  66                 return status;
  67         }
  68
  69         *count = ads_count_replies(ads, res);
  70         if (*count == 0 || !res) {
  71                 status = ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  72                 goto out;
  73         }
  74
  75         if (((*names) = talloc_array(mem_ctx, char *, *count)) == NULL) {
  76                 status = ADS_ERROR(LDAP_NO_MEMORY);
  77                 goto out;
  78         }
  79         if (((*OIDs_out) = talloc_array(mem_ctx, char *, *count)) == NULL) {
  80                 status = ADS_ERROR(LDAP_NO_MEMORY);
  81                 goto out;
  82         }
  83
  84         for (msg = ads_first_entry(ads, res); msg != NULL;
  85              msg = ads_next_entry(ads, msg)) {
  86
  87                 (*names)[p]     = ads_pull_string(ads, mem_ctx, msg,
  88                                                   "lDAPDisplayName");
  89                 (*OIDs_out)[p]  = ads_pull_string(ads, mem_ctx, msg,
  90                                                   "attributeId");
  91                 if (((*names)[p] == NULL) || ((*OIDs_out)[p] == NULL)) {
  92                         status = ADS_ERROR(LDAP_NO_MEMORY);
  93                         goto out;
  94                 }
  95
  96                 p++;
  97         }
  98
  99         if (*count < num_OIDs) {
 100                 status = ADS_ERROR_NT(STATUS_SOME_UNMAPPED);
 101                 goto out;
 102         }
 103
 104         status = ADS_ERROR(LDAP_SUCCESS);
 105 out:
 106         ads_msgfree(ads, res);
 107
 108         return status;
 109 }
 110
 111 const char *ads_get_attrname_by_guid(ADS_STRUCT *ads,
 112                                      const char *schema_path,
 113                                      TALLOC_CTX *mem_ctx,
 114                                      const struct GUID *schema_guid)
 115 {
 116         ADS_STATUS rc;
 117         LDAPMessage *res = NULL;
 118         char *expr = NULL;
 119         const char *attrs[] = { "lDAPDisplayName", NULL };
 120         const char *result = NULL;
 121         char *guid_bin = NULL;
 122
 123         if (!ads || !mem_ctx || !schema_guid) {
 124                 goto done;
 125         }
 126
 127         guid_bin = ldap_encode_ndr_GUID(mem_ctx, schema_guid);
 128         if (!guid_bin) {
 129                 goto done;
 130         }
 131
 132         expr = talloc_asprintf(mem_ctx, "(schemaIDGUID=%s)", guid_bin);
 133         if (!expr) {
 134                 goto done;
 135         }
 136
 137         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 138                                  expr, attrs, &res);
 139         if (!ADS_ERR_OK(rc)) {
 140                 goto done;
 141         }
 142
 143         if (ads_count_replies(ads, res) != 1) {
 144                 goto done;
 145         }
 146
 147         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 148
 149  done:
 150         TALLOC_FREE(guid_bin);
 151         ads_msgfree(ads, res);
 152         return result;
 153
 154 }
 155
 156 /*********************************************************************
 157 *********************************************************************/
 158
 159 ADS_STATUS ads_schema_path(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **schema_path)
 160 {
 161         ADS_STATUS status;
 162         LDAPMessage *res;
 163         const char *schema;
 164         const char *attrs[] = { "schemaNamingContext", NULL };
 165
 166         status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res);
 167         if (!ADS_ERR_OK(status)) {
 168                 return status;
 169         }
 170
 171         if ( (schema = ads_pull_string(ads, mem_ctx, res, "schemaNamingContext")) == NULL ) {
 172                 ads_msgfree(ads, res);
 173                 return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
 174         }
 175
 176         if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
 177                 ads_msgfree(ads, res);
 178                 return ADS_ERROR(LDAP_NO_MEMORY);
 179         }
 180
 181         ads_msgfree(ads, res);
 182
 183         return status;
 184 }
 185
 186 /**
 187  * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
 188  * @param ads connection to ads server
 189  * @param enum mapping type
 190  * @return ADS_STATUS status of search (False if one or more attributes couldn't be
 191  * found in Active Directory)
 192  **/
 193 ADS_STATUS ads_check_posix_schema_mapping(TALLOC_CTX *mem_ctx,
 194                                           ADS_STRUCT *ads,
 195                                           enum wb_posix_mapping map_type,
 196                                           struct posix_schema **s )
 197 {
 198         TALLOC_CTX *ctx = NULL;
 199         ADS_STATUS status;
 200         char **oids_out, **names_out;
 201         size_t num_names;
 202         char *schema_path = NULL;
 203         int i;
 204         struct posix_schema *schema = NULL;
 205
 206         const char *oids_sfu[] = {      ADS_ATTR_SFU_UIDNUMBER_OID,
 207                                         ADS_ATTR_SFU_GIDNUMBER_OID,
 208                                         ADS_ATTR_SFU_HOMEDIR_OID,
 209                                         ADS_ATTR_SFU_SHELL_OID,
 210                                         ADS_ATTR_SFU_GECOS_OID,
 211                                         ADS_ATTR_SFU_UID_OID };
 212
 213         const char *oids_sfu20[] = {    ADS_ATTR_SFU20_UIDNUMBER_OID,
 214                                         ADS_ATTR_SFU20_GIDNUMBER_OID,
 215                                         ADS_ATTR_SFU20_HOMEDIR_OID,
 216                                         ADS_ATTR_SFU20_SHELL_OID,
 217                                         ADS_ATTR_SFU20_GECOS_OID,
 218                                         ADS_ATTR_SFU20_UID_OID };
 219
 220         const char *oids_rfc2307[] = {  ADS_ATTR_RFC2307_UIDNUMBER_OID,
 221                                         ADS_ATTR_RFC2307_GIDNUMBER_OID,
 222                                         ADS_ATTR_RFC2307_HOMEDIR_OID,
 223                                         ADS_ATTR_RFC2307_SHELL_OID,
 224                                         ADS_ATTR_RFC2307_GECOS_OID,
 225                                         ADS_ATTR_RFC2307_UID_OID };
 226
 227         DEBUG(10,("ads_check_posix_schema_mapping for schema mode: %d\n", map_type));
 228
 229         switch (map_type) {
 230
 231                 case WB_POSIX_MAP_TEMPLATE:
 232                 case WB_POSIX_MAP_UNIXINFO:
 233                         DEBUG(10,("ads_check_posix_schema_mapping: nothing to do\n"));
 234                         return ADS_ERROR(LDAP_SUCCESS);
 235
 236                 case WB_POSIX_MAP_SFU:
 237                 case WB_POSIX_MAP_SFU20:
 238                 case WB_POSIX_MAP_RFC2307:
 239                         break;
 240
 241                 default:
 242                         DEBUG(0,("ads_check_posix_schema_mapping: "
 243                                  "unknown enum %d\n", map_type));
 244                         return ADS_ERROR(LDAP_PARAM_ERROR);
 245         }
 246
 247         if ( (ctx = talloc_init("ads_check_posix_schema_mapping")) == NULL ) {
 248                 return ADS_ERROR(LDAP_NO_MEMORY);
 249         }
 250
 251         if ( (schema = talloc(mem_ctx, struct posix_schema)) == NULL ) {
 252                 TALLOC_FREE( ctx );
 253                 return ADS_ERROR(LDAP_NO_MEMORY);
 254         }
 255
 256         status = ads_schema_path(ads, ctx, &schema_path);
 257         if (!ADS_ERR_OK(status)) {
 258                 DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
 259                 goto done;
 260         }
 261
 262         switch (map_type) {
 263                 case WB_POSIX_MAP_SFU:
 264                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
 265                                                            ARRAY_SIZE(oids_sfu),
 266                                                            &oids_out, &names_out, &num_names);
 267                         break;
 268                 case WB_POSIX_MAP_SFU20:
 269                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu20,
 270                                                            ARRAY_SIZE(oids_sfu20),
 271                                                            &oids_out, &names_out, &num_names);
 272                         break;
 273                 case WB_POSIX_MAP_RFC2307:
 274                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_rfc2307,
 275                                                            ARRAY_SIZE(oids_rfc2307),
 276                                                            &oids_out, &names_out, &num_names);
 277                         break;
 278                 default:
 279                         status = ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 280                         break;
 281         }
 282
 283         if (!ADS_ERR_OK(status)) {
 284                 DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
 285                         ads_errstr(status)));
 286                 goto done;
 287         }
 288
 289         for (i=0; i<num_names; i++) {
 290
 291                 DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
 292
 293                 if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
 294                     strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i]) ||
 295                     strequal(ADS_ATTR_SFU20_UIDNUMBER_OID, oids_out[i])) {
 296                         schema->posix_uidnumber_attr = talloc_strdup(schema, names_out[i]);
 297                         continue;
 298                 }
 299
 300                 if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
 301                     strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i]) ||
 302                     strequal(ADS_ATTR_SFU20_GIDNUMBER_OID, oids_out[i])) {
 303                         schema->posix_gidnumber_attr = talloc_strdup(schema, names_out[i]);
 304                         continue;
 305                 }
 306
 307                 if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
 308                     strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i]) ||
 309                     strequal(ADS_ATTR_SFU20_HOMEDIR_OID, oids_out[i])) {
 310                         schema->posix_homedir_attr = talloc_strdup(schema, names_out[i]);
 311                         continue;
 312                 }
 313
 314                 if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
 315                     strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i]) ||
 316                     strequal(ADS_ATTR_SFU20_SHELL_OID, oids_out[i])) {
 317                         schema->posix_shell_attr = talloc_strdup(schema, names_out[i]);
 318                         continue;
 319                 }
 320
 321                 if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
 322                     strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i]) ||
 323                     strequal(ADS_ATTR_SFU20_GECOS_OID, oids_out[i])) {
 324                         schema->posix_gecos_attr = talloc_strdup(schema, names_out[i]);
 325                 }
 326
 327                 if (strequal(ADS_ATTR_RFC2307_UID_OID, oids_out[i]) ||
 328                     strequal(ADS_ATTR_SFU_UID_OID, oids_out[i]) ||
 329                     strequal(ADS_ATTR_SFU20_UID_OID, oids_out[i])) {
 330                         schema->posix_uid_attr = talloc_strdup(schema, names_out[i]);
 331                 }
 332         }
 333
 334         if (!schema->posix_uidnumber_attr ||
 335             !schema->posix_gidnumber_attr ||
 336             !schema->posix_homedir_attr ||
 337             !schema->posix_shell_attr ||
 338             !schema->posix_gecos_attr) {
 339                 status = ADS_ERROR(LDAP_NO_MEMORY);
 340                 TALLOC_FREE( schema );
 341                 goto done;
 342         }
 343
 344         *s = schema;
 345
 346         status = ADS_ERROR(LDAP_SUCCESS);
 347
 348 done:
 349         TALLOC_FREE(ctx);
 350
 351         return status;
 352 }
 353
 354 #endif